Graduating appliance



July 31,"1923- v1,463,317 H. N. HALVERSEN l GRADUATING. APPLIANCE m10. Sheets-Sheet l Filed April 5,. 1920 July 31, 1923.

GRADUATING -APPLIANGE Filed April 5, 1920 1Q Sheets-Sheet 2 INVENTOR BY Mm um A TTORNE Y July 3.1, '1923 H. 'NI HALvERsl-:N

GRADUATING APPLIANGE Filed April 5, 1920 l0 Sheets-Sheet 5 July 31, 1923.

H. N. HALVERSEN GRADUATNG APPLIAIICE 1920 1o sheets-sheet 4 Filed April s A TTU/MEV July 31, 1923.

H. N, HALVERSEN GRADUATING APPLIANCE Filed April 5. 1920 l0' Sheets-Sheet 5 NWN.

GRADUATING AAF'PIJIAIJCEI Filed April 5, 1920 l0 Sheets-Sheet 6 WIr/msgs .I

mmm?, ey/#M IM/"5ft Mm kan@ ATTORNEY GNN July 31', 1923- H. N. HALVERSEN 'GRADUATING APPLIANCE 4Filed April 5,'1920. 10 sheets-sheet 8 July 31', 1923 H. N. HALvERsEN GRADUATING APPLIANCE 1o sheets-sheete Filedk April 5 '1920 my 31,V ,1923- 1,463,317

. H. N. HALVERSEN v GRADUATING APPLIANCE Filed April 5. 1920 10 Sheets-Sheet 10 Patented July 3l, i923.,

'rare Vienne n. nnnvnnsnii, orivfiniinaiin, New Jniasn, nssieivoit 'ro KIMBLE GLASS coirrAN-Y, orv 'cnice-eo, inniiiois, e conroaa'rioiv or-ILLiNoIs.

' eniinuii'riive Application fried apra 5,

To all whom t may concern/: A .Be it known that I, Hans N. HALvnnsnN, a citizen of the United States, residingA at j Vineland. in the county of Cumberland and State of New Jersey, have invented certain new and useful Improvements in Graduating Appliances, of which the following is ya specification. y Y IIhis invention relates to graduating engines or machines and pertains more particularly,'but not' exclusively, to' appliances for niarkinfr spaced volume graduations on the outer surfaces oi glass-tubes. Such tubes are usually externally covered with wax and thescriber or marker traces the graduations or scale lines through the wax, whereby when the tube is removed from: the machine, the lines, by suitableacids,mayjfbe etched into thesurface of the tube.- 1 y The internal caliber or borel of glass-tubes necessarily vari-es somewhat throughout its length due to unavoidable irregularities produced during the drawing of the tubing, and, Y, although such variations in volume are con, paratively'slight, a machine embodying this invention compensates for such changes or dimensional differences, and, so to speak, distributes the variation properly in Vthescale markings, whereby the Vgraduation of the tubeis effected withgreatl accuracy.

A further purpose of the` invention is to.'

provide a mechanism which Vwill automatically trace a portion 'ofthe graduation lines part way around the tubejand will cause other lines, for example, every. tenth line, to extend the full distance around the surface of the tube. lt is also vcapable of marking other lines, for instance, every iifth line, somewhat longer and hence more readily di.

cernible or more conspicuousk than the unit lines. i

An additional feature ofthe invention is the capability of the machine-forl properly and accurately graduating tapered tubes and bodiesand those which vare in `part straight and in part tapered, both portions of such latter style or" tube being correctly marked without attention on the part oflftlie. operator., the change inlgraduations from regular to irregular spacing inatically. 1 f, another advantage in the u'se'of a Alf inc embodying this invention resides in the elimination or taking up of the slack or, looseucss in the operating parts of `the .mechoccurring entirely ,auto,L

Arrrrnivcn.

i920. sei-iai No. 371,194.

anisin wherebyto secure extreme accuracy in the graduation markings. p v

Furthermore, the invention includes means l for rendering any wabbling of the operating feed screw-sliaft comparatively ineie'ctive onV the travel oi the carriage actuated'by such shaft.y i Y `Still a further feature of the invention is the automatic stoppingof the machine after Inorder that th'ose skilled this art may i have aV full and completeunderstanding of this invention and the manner of securing y the above-specified and other 1 desirable objects and purposes, a preferred ein# bodiment` of. the invention has been illus# trated infthe accompanying drawings 'L "oiming a part of tliisspecification to which reference shouldbe had in connection with the ollowing'detailed description of the-construction and mode of operationofthe appliance illustrated therein. In these drawings,'througliout the various views, like reference characters refer to thesaine parts'. f :In thesedrawings; f Ai Figure lis a general plan view of the construction, some of the details ofstructure'be'- ing oniittedfor the sake of lcle'arnes's of' illustration; i 'i Y Figure 2 is a verticalsecti'on on line of Figure l; the parts being viewed Vinthe A direction indicated by the arrows;

'nigureis a fragmentary plan viewonan enlarged scale of the screw mechanism, for `operating the wedge structure which feeds the glass-tube along step-by-step durlngthe markingV operation;

Y ibfiguie i is a longitudinal vertical section threugh the lportion oir the mechanism shown in' Figure and mav be considered asY asectionen line l-ot 1F igure 5 ,1

Figurey 5 isa vertical, cross-section online 5-'5jot Figurey li, the partsbeing viewed in' the direction indicated by the arrows.l j

Figure Sis a horizontal View taken on line G-Goi' Figure 5;k

Figures 7 and 8 are end and side elevations respectively of the ratchet andV other ine :ha`1 nisin vassociated with the feed screw-shaft;

lfigures `9 and l() illustrate :fragmentarily inelevationand ,end view respectively the :powerdrivino mechanism and otlierzparts of the appliance Figure l1 is an elevation of the marking lio Y or scribing portion oi: the device, the glasstube operated upon and its internal rod being shown in section;

Figure 12 is a horizontal section on line 12-12 of Figure 11;

, Figures 13 and 14 illustrate in end view and plan respectively one of the-adjusting and holding means for the flexible channel bar of the wedge mechanism;v

Figures 15 and 16 are a fragmentary plan view and an end View .respectively of the gear and rack device provided for adjusting the length of the slide carrying the tube to be graduated;

Figure 17 is a vertical sectionon an enlarged scale through the tail-stock for holding the glass-tube during the graduating worl thereon;

Figure 18 is a face view of the cam which controls the lengths ot the graduation lines to be marked on the tubes; y Y

Figures 19 and 20vshow in plan view two different positions of the elements employed to effect unequal spacing of the graduations, such as are required on a tapered body;

. Figure 21 shows a fragment of a straight glass-tube graduated by this improved appliance; and

Figures 22, 23 and 24 are detail views ot the mounting of one of the pointers Referring to these drawings, more pan ticularly Figures 1 and l2, it will be observed that 'the machine comprises a main-trame or table-portion 30, supported on suitable legs 31, 31, having on its top tace a pair of opposed guide-grooves 32,732-V (Fig. 16) accommodating between them a main-slide 33 on the upper'face oic which is a lengt f wise-disposed undercut or dovetail rib 315%.

Fitted on, lon Oitudinally adjustable on, and p "El adapted to be clamped to, such rib'by any ordinary means, not necessary to illustrate, are head and tail stocks 35 and 36 respectively (Figures 1, `2, andrll?) adapted to support the opposite ends of the glass-tube 37 to be graduated and the metal ,rod 4:5 inserted in such tube.

Such tube-supporting stocks be el? any suitable construction, but in the present instance the tail-stock 36 shown in detail in Figure 17, comp ises a standard 38 lit ed at its top end with a demountable shell 39 having any appropriate interlocking cone nectionrwith the standard and accommodating internally a hollow, shouldered sleeve 110 having a conical or flaring socletvil atY one end adapted to receive and press against the corresponding end of the glass-tube 3'? which, in this particularvinstance, as is illus trated, is ori: uniform diameter, in other words, it is untapered. This sleeve is held to its work yieldingly by a coil-exnansion spring l2 housed in the shell and bearing at one end against the shoulder or" and at its opposite end against an aperconcentric, Y upper,

the sleeve Y tured end wall 43 or". the shell through the hole ot which the sleeve extends. The protruding portion ot the sleeve is screw-threaded and fitted with a nut 1111 acting as a stop limiting the extent of sliding ot the sleere to the left as the parts are viewed in Figures 1 and 17.'- Sleeve 10 receives a cylindrical metal rod 45 in its interior on which the glass-tube is iitted to prevent displacen -nt or bending of the tube and to prevent the "55 insertion in the machine a 'tube unduly irregular. y v Y The actual construction ci these head and tail stocks is largely immaterial so long they firmly hold theglasstube in place against rotation and are of such struct that the tubes maybe 'inserted in tlvv chine and removed therefrom with Jfacil .v

As' is illustrated in Figures 1 ad left-hand part ot the machine is sup with a supplemental or auxiliary slide fitted in the guide-slots lo on, 32 and on its top tace with a roller 51 o diameter to roll on the opposed faces of two guide-bars e6, 4:6 forming the tops the slots 32 andan independently-r-^velu.` e smaller, antririction roller 52, concentric with roller 51, suppl" ,d fora purpose hereinafter indicated, rl two krollers may be conveniently i dently mounted to revolve on a 4short upn standing shaft ca 1ried by the slide and the common verticalV axis oi" such anti-f i rollers is in the central, longitudinal, vertical plane ci the main-slide 33 in which plane, of course, the axisof the tube to be graduated resides. Y Y The lett-hand end ot a rod 5a is fir-:el 55 to this complementary slide 50 and its other end portion is formed as a raclr 5G with its teeth uppermost as shown in Figures 1, 15, and 16. Ablock 57 is adjustable lengthwise on the dovetail rib 341 or" slide and is adapted to be clamped or held firmly thereto in any position desired byV turning its holding-screw 58 (Figures 15 and 16). This block aliords a bearing for a cross-shaft 59 equipped with a pinion 50V in mesh with the teeth of the rack and with a knufed handle 61 by means-of which the shaft, gef and rack may be manipulated. ln order maintain the desired adjustment between these parts, the block Ywhich is. recessed in'or the accommodation of the rack is provided with a clamp 62 to engage the side oi' the rack and clamp it between itself and the block, such element 62 Vbeing actuated by a cam or eccentric 63 engaging its upper pon tion and operated by a handle 611, the part 59 constituting fulcrum for element By these means the distance betweenl the two slides 33 .and 50 may be adjusted or vari-ed. During the graduation et the tube, the connected slides 33 andY 50 and their tubesupporting head and tail stocks are necessarily moved along in the guide grooves 32, 32 interruptedly or step-by-step to provide the spaces between'the graduation lines and for the accomplishment of this result the following (3o-operating instrumentalities are employed.

Y At the'left-handV endof the machine an l elongated, diagonally-disposed guide 70 of irregular shape has its base-portion 71 pivotally mounted on the top of the main-frame 30 in register with the central longitudinal aXis `of thecombination slide 33-'50, by means of a hollow or perforatedbolt 72 (Figures 2, 4,5, and 6) whereby the guide may be adjusted angularly, as will be readily understood. A carriage 74, slidable lengthwise on such oblique guide, has a diagonal t bar 75 hinged by its lateral extension on an overhanging part thereof at 73 near the rearV end ofthe carriage above the vcenter line of the combination slide 33-50, and the angular disposition of -such'bar with relation to the carriage is determined by a telescopically-adjustable means 76 pivoted to the front end of the carriage atr77 (Figures 1 and 3) and tothe front end of the bar at 78 (see Figures 1,12, 3, and 5). The length of this link may be varied or modified byturning vthe threaded knurled disc 79 and the adjustment thus secured may bemaintained unchanged by tightening. aclamp 30 which locks the two parts of the link together and lagainst relative movement;

and the pivoted bar form a wedge, the angle `roller 52 on slide 50. (See Figure 3.) Such flexible or deformable bar is held in place at itsgrear end by a pin 32 (Figure 3) securing it to the element 75 and by four clamps 33,

' 84, 35, and 86 (Figure 1) ,by means of which A 'ce the bar may be flexedjor bent laterally and maintained firmly and securely in that condition for the purpose of compensating for v variations in the internal caliber or diameter ofthe tube to be graduated,

-Y One of such clamps 1s' shown in detail 1n Figures 13 and 14 from whichillustrations Yit will be clear that thebar has a longif tudinaldepression 87 'along one edge in which the flexible bar 31 resides, a lengthwise shoulder 88 adjacent to such channelbar, land a V-shapcd groove 39 in its opposite edge. Each clamp comprises a block 90 resting on the top of the bar and having a marginal flange 91 bearing on the shoulder 33, the other end or side of the block having a screw-actuated clamp-plate 92 engaging the The carriage Y V-shaped groove. By these means, the` block is rendered adjustable lengthwise the n bar and maybe liXedly held in any adjusted position. lThe block affords a support for a screw 93 having a castellated end 94 in one cross-slot of which a pin .95 lits, thus'preventing turningy of the screw in its bearing or' socket. Mountedto oscillate on this screw is al gear -96 havingan operating'handle'97, the gear being inmesh with a suitablylguided sliding-rack 93 having a downturned end fittinoin the groove of the flexible channei-bai (Figure 1e). at one sident-the gear, the screw is tted'with a loose block i 99 and beyond this with ahnt-handle 100,

the turning of whichl tightens the 'bloclr against the gear, preventing its movement as lSpell as that of the Yraclr'and hence the 'ilexie bar. c

In order to adequately supportthe bar 7 5i and its associated elements a Vsupporting track 101 (Figure 1) is provided., beingheld in position or supported by a pair of brackets 102, 102l mounted on thev base Aof the guide member so as to be angularly adjusted therewith.

Y g L To pull the combination `slide 33-50 to the left andhold its roller 52 in engagement with the Side-face ofthe flexible channel-'bar 81, afcord or cable`103 (Figure 1') is fastenedv to the-slide 50 vand passes over va suitable supporting'sheave 104, a suitable weight 105be1ng secured to its depending end.

vScrew mechanism is employed to' feed the wedge 7 4-75 rearwardly step -bystep, ,thus intermittently shifting the combined slide Vandglass-tube to the right and this includes v a long screw-threadedl shaft 110 rotatably mounted in bearingsl 111 and 112 at the front 'i and rearends respectively of the yguidemember 7 0,'one end of such shaft engaging a I thrust-bearing 112mk (Figures 1, 3, 4, 7', and t 8). As is clearly shown in Figure ,4, the thread of this screw-shaft has arear straight face or. edge and a front sloping or beveled face to permitthe nut elementv 121, referred to later, to engage the screw shaft andtalre up vthe slack inthe mechanism,as described hereinafter. I

The carriage 74 hai; opposed guidewaysVv 113, 113 V(Figureh) inV which is slidingly;`

fitted a plate or-,supplemcntalcarriage 114 vwhich has a bar 1.15Y (Figures'3 and 4)pivoted or hinged thereon at its rear end at 116,

v1:20 mutilated orrapertured sleeve 117 (Figures such element 11,5: at itsfront end carrying a 3, 4, and 5) surrounding-the screw-shaft. A

yoke 113 hinged` to the underside ofthe bar f at 119 supports' a, forwardly-projecting bar 120 on which a substantially-semicircular nut 121 is mounted by means of screws 122,

122. i Such half-nut is adapted to engage andyco-act with the'k upper half of the thread of the screw-shaft by projectingV 'downwardly throughthe aperture of the sleeve. To hold '713.0

such half-nut in engagement with the thread of the shaft two links 123, 123 are hinged at 124 Vto the lower portion of the sleeve and at their apertured upper ends they are connected together by a shaft or rod 125. A

catch or lock 126 provided with an operating` handle 127 is pivoted on a pin 128 mounted in ears 129, 129 upstanding from and integral with the halt-nut 121sucli element 126 also having a pivotal connection with the rodorfshatt 125 and equipped with a ,tootpiece or stop 130 adapted to engage the top tace orP bar 120. W hen handle 127 is in the position indicated in Figure 4 the mutilated nut isr in engagement with the thread of the Y screw, but it the handle is swung to the left the toggle connection if; bent and the nut is raised to an inoperative position.

T l t *ce-2'1"'L'tl1ot1 .Q't fl* in orner o i strict i e dining enuency y of the nut and to prevent it 'from springing .together as a unitary structure when the inachine isrernployedv to graduate untapered tubes.

To pull the carriage :forwardly itis iitted with a cord or cable 136 secured thereto and passing over a pulley 137, the hanging end of the cable being equipped with a suitable weight 138 (Figure 1).

To interruptedly or intermittently rotate the long screw shaft to feed the wedge 7d-75 step by step' and hence cause `a sii/nilar movement oro the glass-tube, it will be necessary to start'with the inain drive-shaft and trace the operative connections to the screw-shaft.

, Such ina-in drive-Shaft 1110 (Figure 1) located at the right-hand portion of the rnachine and disposed 'at an acute angle to the axis of the glass-tube is revoluble in bearings 141 and 142 being driven by a belt-operated pulley 1413. At its rightehand and, (Figure-s 1, 9, and 10) such shait is yprovided with an eccentric or earn Mllencircling which is a sleeve 145 pivotallyl connected at its top and bottoni to a yoke 146 iaving Van extension arni pivoted at 1117 to an upper short arin 1118 iixed to a vertical shaft 149 carrying a longer arin 15() at its lower end connected by a long link 151 to an arni 152 (Figures 1- and 7) on the lower end of an upright shaft 153 having a bearing in a'braclret 154, an arni 155 on the upper end of the shaft being connected by a link 156 to a biturcated roclrarrn 157 (Figures 7 and 8) oscillatory on shorshat or bolt 158, the upper end of the rock- Vco-ope'ratii/"f-i relation with par-.il 161.

arni by ineans of a link 159 being operatively connected to a biiurcated member 160, the hub of which is tree to rock on the cylindrical protruding portion of the bearing 112. The element 160 carries a spring-pulled pawl 161 co-acting with a ratchet 162 xed t the screweshaiit. rEhe arni 157 and the link 159 torni a toggle which passes slightly beyond the screw-shaft at tinies during the graduation operation, as when it is required to nia-rk each tenth graduation entirely around the tube, and to stop the rotation or the screw-shaft when the graduating oli the glassetube has been coiipleted, the tollowy co-operating elements are provi Pawl 161 on one side has a projecting roller 163 (Figure 7) adapted toco-act with a bent pawl-controlling arni 1611 free to cscillate on the end portion ot a longitudinal shaft 165 rockingly and slidingly inounted in suitable bearings 166 and 167, (Figure 1) such eleinent 1641 being connected by link 168 (Figure 7) to'an arin 169 clamped on shaft 170 oscillatory slidable in bearings 171 (Figure 8) and 172 (Figure 6) and supplied with torsion-spring connection173 tending torock the shaft in a direction to hold the arm 161i down out et Shaft 170'has a curved 17e (Figure hired thereto with its end above a spring-prV vertically-slidable rod 175 :(Figures 2 and acconiinodated in the aperture oli kbolt a and adapte-d to be lifted by one arin oi bell-crank 176 ulcrunfied beneath the taule at 177, the other end of the arin being connected by a long link 178 (Figures 1, 2 and 6) to one arin of a bell-crank 179 (Figure 1) iulcrunied at 180 and having its othe arni provided with a'roller 181 co-actink with a cani 182 on the side or" tie 18,- in mesh with and having eleven tinies as riany teeth as piden 184i on the niain iaiit 1110 by whichit is driven. Gear 1 is niounted on and Vd'rives'or rotates jacksnat 185 rev'oluble bearings 186 ,c

Thus it will be seen that once during each 'revolution of shait Oear 183, and cani 182, ineans of the ooniiecting inechanisrn described, the pawl 161 will be rendered inactive iior a period, hence interrupuliig the intermittent rotation of the screw-shaft to enable the scriber or inarker described below to out each tenth graduation line in the wax entirely aroundthe tube. The pinion 184 makes fone complete revolution for the marking of each short line and two comfied co-actingparts are used.

plete revolutions for each long tenth line all s is shown in Figures 1, 3, and 5 the longitudinal shaft 165 is provided with a :plurality of spaced, spirally-arranged outstanding pins \or rollers 188 (eight in the present instance) and a collar 189 spaced apart distances corresponding to fifty graduation lines on the glass-tube and has also a notched disc 190 (Figure 7) fixed to the shaft and with which, co-acts a stationary spring-catch 191, whereby the shaft maybe turned by hand to bring and hold or lock the shaft with any one of the pins or rollers 188 or the end-collar 189v in alignment or register with a lug 192 (Figure 3) carried by Vand extended laterally from a springpressed encasedplunger 193mounted on the standard 133, the stationaryshell Vorvhousing 194 havingl a lengthwise slot to permit the projection of the lug' therethrough. y

`Vhen, therefore, during they travel of the carriage as occasioned by. the feed screwshaft the exposed lug 192 strikes the particular aligned pin 188 it will cause the pinshaft 165 to be shifted lengthwise slightly in its bearings, which movement is transmitted to a lever .195v (Figures 7 and 8),ful crumed at 196v and overlying the ends of both shafts 165 and 170, and to the latter shaft moving it to the left, as the parts are viewed in Figure 6 and 8. -In a slot at its forward end shaft 170 has pivoted thereto an arm 197 (see'Figures 5 and 6) oneend of which is received in a recess 198 in a stationary block 199. When, therefore,'sha ft 170 is slid to the left, the free end of arm 197 will be moved to a position over the end Y of arm 174 and directly above the verticallyslidable rod or pin 175 and also beneath an upper arm 200 on 'a suitably-journaled rockshaft 201 having a downwardly-extended arm' 202 connected to along rod 203. Such rod 203 extends through ahole inthe lower. extension of a lever 204 (Figures 2,9, and

10) fulcrumed slightly loosely on the frame at 205 (Figure 10) and havingY an upstanding arm 206 on which ,an anti-friction grooved roller 207 is rotatably mounted. @n its right-hand threaded end rod 203 has a nut 208 adapted to engage'the side ofthe ilever and rock it slightly laterally to the left as the partsfare viewed in vFigure 9.-

Rod 203 is encircled by a coil-"spring 209 bearing at one end'against the lever and at its other end against a cotter-pin 210 extended lthrough the rod Vand-to which'anotherjinclined coil-spring 211 is fastened, the opposite end of the spring-being "connected to a slotted guide-plate 212 bolted to the frame, whereby the spring tends vto lift 'lever 204, the lattery extending through the slot of such guide-plate and h'aving'a re- L 4duced endf213 projecting forwardly'there-` from. When rod 203 is shifted to the left (Figure 9), it vrocks the lever'204 sidewise on its fulcrum'to move the roller 207 to the right into the path of `travel `of a circular' rib 214 (Figure 9) onthe eccentric sleeve 145, whereby the rib engages the roller and forces the lever down against the lifting action of.l spring211.

A friction-clutch 215](Figures land 9) operative when vslidto the right, is adapted to couple the belt-driven pulley 143 `to the main-drive-shaft 140, being actuated b a suitable yoke 216 on a rock-shaft 217 (Biguresl', 2, 9and10) provided with a depend-- ing operating handle 218 and a downwardlyextended arm 219 fastened to the shaft, such arm having a pin and. s lot connection 220 with an inclined slide-bar 221 extended through and supp'orted'by a slotted guide'- 'member 222 Vfastened to the. frame,z"a coilspring 223 secured 'to Vthe bar andto; member 212 tending tofslide the bar to the right.` This is normally prevented, however, by the part 213 of the lever 204 which extends across the end of the bar-as shownl inFigures 9 and 10, hence maintaining 4the friction-clutch in operative condition. When rod 203 is ypulled to the left roller 207 is shifted into the held of travel of rib 214 ywhich engages the roller and depresses lever 204 moving its endzaway from the bar-221, whereupon the latter, under'the action of its spring 223moves tothe right, forcing the yoke 216 tothe left and rendering the clutchy inoperative, in other words, disengaging the constantly-driven 'pulley 143 from the drive-shaftv140.

In addition to thepin-shaft 165, member 470 alsov has a suitably-j ournaled,'shorter, parallel pin-shaft' 224 (Figures V1 and 5) provided with a series of four, radially-proj ecting pins 225,226,227, and 228, corresponding to the 100th, 200th,-`,300th, land 400th graduationsi on the tube, no pinfor the 500th graduation being employed because the maesy chine automatically Ystops vupon making the shafthasla depending arm 229 (Figuresr2Y and 5) secured thereto which isfap'ivoted to a Slong, horizontal, 'handle-rod 230'supported atits other end by a'f-link231 Figure2) pivoted to themachine-framel arriage 74 .has

a lateral lugorfprojectionf232 (Figures 1,5125

3, and 5)'. adapted to'l engage any one of the pins on shaft 224,` brought into alignment The purpose of this construction is to be able to quiclrly preliminarily shift the position 'of the carriage lll and the Vflexiblenchannelbar 8l. whichr it carries to definite positions corresponding to the various 106th lines inA dicated. The purpose of this preliminary settingof the machine will be described hereinafter. y t

Turning now to the means for lmarlring the scale or graduation lines on the tubes, jack-shaft 185 has a cain 233 (Figure l) coactin'g with a roller on an arm 23e1 (Figures l, ll, and l2) fired to a vertical roch-shaft 235 having upper and lower arms 236, 237 rigid therewith connected by linlrs 238, 289 to two slides 240, 241 reciprocatory in longi` tudinal grooves in the. top and bottom surfaces of astationary bearing 2&2 which internally accommodates a rotary sleeve 2&3

through which the glass-tube 87 to be graduated extends. Such sleeve is revolved by a bevel-gear 244-- cut thereon and an intern meshing bevel-gear 2&5 on the drive or clutch shaft le@ (Figure l). The two slide-blocks 2e() and 241 carry a sleeve 2&5 itted over and slidable lengthwise on a finished portion of the bearing 242. e

` Internally near one end the sleeve 241;@ has a cylindrical surface 2/18 and two adjacent cam-surfaces 249 250 adapted'to controlY the length of contact of the scriber or marke-r with the glass-tube.

@n the ad'acent end of sleeve or hollowl shaft 24.3 a lever 251 lfioures ll and 12l is e fulcrumed at 252 and carries a sharp-pointed needle or scriber 253 which is normally held in toward the glass-tube 37 on which it operv ates byv means of a torsion or coil-spring 254L acting on the lever. ln addition, another lever 255 is pivoted on the end of sleeve 243 at 256 the levervhaving a toe 257 overlying the tail-end of lever 251, and, additionally, lever 255 is supplied with `an anti-friction roller 258 adapted toco-operate with thev various cylindrical and cam surfaces of the Vcamsleeve 246 depending upon the position of t tlielatter as: to which surface it coeacts with.. VWlien cam-sleeve V2li@ is in such position that the cam-portion 249 is in register with the roller 258, the VLarker 253 will draw aV unit line around about one-third oi the oircumference 'of the tube; and when the canisurfaoe 25@ co-acts with such roller, a iifth line will be'made which extends around about three-lifths of the circumference of the tube.

lever 255 will be such, during` the entire reta- 'tion' of the scriber or marl-rer 253, that the latter will engage the tube all'the time and will make a tenth graduation line extending entirely around the tube To assist in preliminarily positioning the glass-tube to be graduated in the machine correctly, rack rod 5e is equipped with a roclrable, springpressed needle or pointer e0() (Figures l, 2, 22, 23 aiid'2a) which nay be swungup in' o opera'I lve position adjacent to the glass-tube or may be turned down into inoperative position vout of the way Vcuring the actual 'graduating operation. y

lt will be observed that such i ointer 400 is adjustably clamped in a collar lOl roelable on the rod or shaft being held frictionally in any desired position by reason of the manner in which it is held pressed against the face of a clamp l02 secured to the rod. 'Y

The collar is positioned between this clamp and another similar one 1li-O8, a collecl spring elle encircling the hub of the collar and bearing at one end against the element iO and at its other end against an enlarged part of the collar, such spring, therefore, maintaining the collar pressed against the clamp l02 with sufficient pressure to maintain the pointer in any desired position but permitting its rocking on the rod to any other desired position.

By reference to `Figure l of the drawing, it will be notedthat the roller 51 is directly under and concentric with the pivot 78 (Figure 2) or une slide and the bar 75.

rlhis is the neutral or first line position of the part and while slide 74 is in this position the bar 5 may be swung to tie right or to ther left on its pivot 73 without impr-rtinaany movement to the pointer or needle e which is connected to the roller 5l through the bar 54, the, connecting block 155 and the slide plate 50.

lllith the slide 7e in this first line position, the pointer by adjusting the clamps 4:02 and llO is set to register with the rotatable marker or scriber 253.

Assuming that a straight, untapered glasstube, such as is used for a burette is to be provided with five hundred graduation lines corresponding to live hundred cubic centimeters, the operation of the iiachine is effected as follows:

First. The tube is graduated by hand by Vvoluminal measurement and short tempoinarlrs arev exactly correct, Vbut the distances betweenfthein are not necessari y precisely alilre because of unavoidable variations in the bere or internal caliber of the tube.

. Second. The combined carriage P'le--il/.l with its two elements locked together by the pin 135y is shifted to the position for making EGG the final graduation line on the glass-tube.

Third. By turning the hand-wheel 3052L fixed on sha-ft 140 the latter is backed up one complete turn so as to bring the needleor marker 253 to'inal line marking position, otherwise it would be in a position to draw a short length unit line, because the Ylast mark which it made on the precedingtube was Aa 500th line extending all the way around the tube, and, in vorder to make la zero line entirely around the new or present tube, this'slight backing up orfreversing action is required. 7

Fourth. The metal rod 45 having been clamped permanently in standard 35 in any suitable manner as by a set screw or clamp, and the parts shown in section -in Figure 17 yhaving been removed from their standard and the rod 45, the glass-tube to'be graduated is applied to the rod,`the latter acting as a guide to facilitate the insertion of the tube Y through the rotary sleeve 243 and the adjacent marker which is temporarily held slightly away from the tubek by any appro-ved means, as, forexample, a small block (not shown) interposed between its tail and the part 257. yThen the .sectioned parts shown in Figure 17 are lplaced on therod' and locked in the standard 36.

Fifth. The zero mark on the tube and .the hinged zero pointer 400 (temporarily swung up into position) on the rack-bar 56 are brought into register while the carriage 74-114 is still in nal line position, by loosening the clamp 62, turning handle 64, manipulating the knurledwheel 61 which changes the distance between the two slides 33 and 50, and then' tightening the clamp 62 again. Y iDuring this registration the position of the rackV pointer 400 does not change, but the slide carrying the glass-tube only moves. Thus the previously-set pointer 400vis used to adjust the glass-tube by while the carriage is in final line marking position, the 'scriber or marker atjthis'time being at about but perhaps not exactlyat the final line position on the tube. f 1 Y Y Sixth. N ow the clamp 80 is loosenedvand the length of the telescopic link adjusted to make the angularV position jof the exible ychannel-bar 81 such that vthe final or 500th line on the glass-tube is nearly'opposite the needle or marker 253. The clamp is then locked and thefinal adjustment'is made by turning the knurled nut 79 Vto ythe .right or left as the case may be to bring such "final,

`position Vof the Eighth. Hanan 23o is Sinaai is' the itaV to bring the 400th position pin 226 into reg'- ister with the lug 232 of the sliding carriage, thelatter being moved to bring the l i lug into Contact with lthe pin.

Ninth. Handle'r127 is'swung to the `right 1 as Viewed inV F igures-S and 4to bring the n f nut 121 into co-operative relation with the screw-shaft 110. Byreas'on ofy the hinging or pivoting of the half-nut at theV point 119l a substantial Ydistance below the axis of the screw-shaft, the shifting ofthe half-nut'into mesh with thev screw thread of the shaft, moves the nut and associated parts slightly to the right as the elements are viewed in Figure 4, Vthus,eliminating the Aslack in the mechanism and shifting the carriage 74-114 back slightly pin 22e. p y

Tenth The clamping member 86V corresponding tothe 400th position isadjusted to from such V400th positioning cause thelexible bar. 81 to bring the 400thy temporaryline on the glass-tube into register withthe marking needle or scriber 253.

EleventhqBy the use of the shaft 224, .l

which is actuated by the handle 230, thel carriage is adjusted successively to the dif-v y ferent hundredth positions and the corre# sponding flexible-bar clamps 85, 84, and 83,

are manipulated to adjust the 'iiexible-b'ar" erative by handle 218 and the machine continues in action until 'the final line is drawn in the wax on thetube, vthe clutchbeing maintained active by reason of lever 204 overlying the end of bar 221,'but the clutch may be thrown out by'hand at any time by reason of the'presence ofjthe pin and Vslot connection 220.`

.FourteenthV Atzero position, and whileV the -screw-foed'of the 'carriage is inactive,

the'scriber iiiarlrs-f-tlie 0 ,lineA around the Y entire circumference of 'the tube, the sur- Y' face 248 being in registerY with the roller258, Y

and, in addition, the scriber conti-nuesmarkaround Vor o-tei: the Vsaine 0 circleline allready inadefa distance-equal tothe length of a unit line (in the present'instance about Y one-third lof the way aroundt'hetube).

During this extra vmarking, ysleeve 246 is shifted tobringcam surface 249 into register with roller 258', whereby when suoli 051 unit excess marking is completed, the scriber is automatically lifted justasthough it had been making a unit line only.V During the first 360 degrees oi" tent line, the pawl 161 is rendereL remaining two-thirds of such second revolution or" the scriber at the O position, the tube is automatically moved longitudinally to bring` the tlrst unit gosition into reoister with the scriber by means oia the following cooperating elements; cani 14141, cam-sleeve 145, yoke 146, arms 147 end 1&8, shaft 149, arm 150, link 151, arm 152, snuit 153, arm 155, link 156,'rock-arms 1,57, link 159, pawl 161 ratchet 162, screw-shaft '10, nut 191, bar 120, yoke 118, pin 119, bar 115, screw 116, slide 114, pin 135, carriage 11, bar 75, lexible channel-bar 81, roller 52, slide 50, rod 54, rack 56, clamp G2, slide 33, and head and tail stocks 35 and 36. differently, the screw-shaft is viven a partial rotation by the pawl and ratchet mechanism such turning of the screwshatt Yfeeding the wedge 74,-, rearwardly o small amount, thereby sliding the members carrying the glass-tube. 1

After the glass-tube has reached 'this unit position and during; the nent stationary period oi' the screw-shaft and carriage, the scriber drops on to the tube, marks e unit line one-third oi the way Yaround the tube, and then, durin,i 3,` the succeeding two-thirds rotation of the scriber, is lifted oit of the tube, and by the means described, the tube is advanced a second unit listance. Thus, tour parallel unit marks are mede, but when the fifth unit line is marked on the tube,

cam-surtace 250 will have been moved into co-operative relation with the scriber und everything` occurs as for the other unit lines except that such itth line is longer, being` desirably about three-fifths of the circumference oi" the tube, then cam 2&9' is again brought into action on the scriber during the marking oiE the sixth, seventh, eighth, andy ninth unit lines.

During;` the lirst t around the tube, during the in rling or the the retchet und screw-shaft by reason oit the irc-tion of the 'following' partst-cani 18:2, roller 181, bell-crank 179, link 178, bell crank 176, 'pin or rod 175, arm 174i, shaft 170, arm, 169, link 158, and pend-controlling arm 164. As a result, the succeeding or supplementary unit line is ninrkedon the same circle, the tube being` then stepped along to the next unit or eleventh line position the part 164e in the meantime being rendereJ active. is because ot the marking of the tenth lines in .the manner indi-cated that trie gear 183 eleven times as ineny teeth es its driving),`V pinion 184, revolutions or 4the scriber being consumed in the producline, but only one beingY automaticallyVV until the lest .hundredth Stated somewhat l y'. Vleriy adgus (500th in the present instance) is completed, and when this occurs, the projection 192 by engagement with the collar 189 on she'ft 16 slides the latter rearwardly, rocks lever 19 on its liulcruin, causing a forward slidin.:h of shaft 1Y0, thus bringing the space-bai' 19'.7 between the ends of the two Je and 200, whereby when the cam 182 by the connections described, slides the pin 175 vertically, the 200 will be rocked upwardly and through Vthe connection 201, yS202, 203, and 20S, will move the lever 2041 latere1v Jringing' its roller 20'? into the path oi afy ion of rib 214, so that the letter depressies lever, releasing,` the bei1 221 which reH ends tor the action oi spring;v 223, rocking shaft 21'? to render the clutch i inactive u the moi/'ement of its yoke 216, thus stopping" the rotation ot the main shaft and all the parts of the inechenisni. The coniiietely-gradueted tube is now removed from the machine.

rllubes o the character described do not vary ebruotly or suddenly in intern,` liemetei, and, if it were attempted to ete Lthe distence een each two t `irelireinery orinitial marks 34)@1-2-3-1-5 by equally-silenced lines, there woull somewhat sharp chenges in the greduations at suc-h hundredth lines which would not conf-erin tothe real conditions ot the inteinel caliber of the tube. By 'flexing the wedgechannel-bar 81 around sucl leundredth. line points abrupt graduation changes are avoided made gradual to harmonize with the bore conditions of the tube.

1n cese it I partly straight nd prtly te Jerec., such :is a centrifuge tube, the io lowing' additional elements are employed "flete or slide 111 has a guide-plate 50G iidjustably mounted thereon by meins of screws 501 and 502, the forme-r ent/ending through a hole of the same size plate 500 and threeded into a hole ofthe slide', the lat passing through e slot 503 in 'plete 50G 1 id tekinginto a threadedhole in the slide, 'By these means this guide-plate,which in o tl` the slide, is nevertheless anguteble thereon. Above and spaced away from such guidefplate is a retaining element 5011 and Ybetween thetwo l provide a ber 505 equipped at one end with a roller 50G adapted to treyel on the edge or a guide moment during' ments 114e andv t., f1 to encountei Tversely of the slide on member ably clamped to a rail nortion 5 1 nvt fr u ,1 o, frm, 1 ,t m11 i ,L par oi the nienioci o phenol Lo ii Y 1 axis oi the screw-shaft 11G.

'meegaat' '--V'Ioller 506 also travel's lon the edge of a bar l'fulc'rumed on the carriage 74 at 513,

` the bar being bent or offset laterally an amountcorresponding to the width ofthe bar 'plus' the diameterof the roller 506, the

Vopposite end of the bar being intendedat the proper moment to engagea roller 514 on ai block 515 adjustable laterally ofthe rail 511 on an element 516v mounted and adjustable on the rail lengthwise.

INhen this unequal graduation mechanism is employed for tapered bodies, the pin 135 which for straight-tube vwork locks' the two elements 74 and 114 together, is removed and" the travel off slide 114 brought about bythe turning' of the screw-shaft is transmitted' to the guidefplate 500, roller 506, and bar 5121- to the rcarriage 74, it being notedthat when straight-tube work is being done,the axis of the roller 506 is. directly above the axis of ulcrum 513y whereby there is no Vtendency for suchftransmission of power through the roller to change the position of the bent-bar 512. So long,l therefore, Vas thev hook 507 is not in contact with the roller 508 and the bar 512'is not inengagement with the'roller 514, the machine will operate just as though the two part's'114 and' 74 were locked vtogether by the pin 135, and Yit will effect graduations Vfor thestraightportion of the tube in Vthe manner described in detail above.l When thel tube operated "upon hasr` been shifted so 'thatthe @beginning of its tapered portion is in register with the scriber lor marker thehook 507 will'comeinto contact with the roller S and the bar 512 will erigage the peripheryof roller 514. Further travel of the slide 114 causes the vroller 506 to niove'along the edge ofthe guide-plate 500 as is indicated by a'comparison of Figures 19and 20, thus causing an accelerated `move- 7 ment of carriage 74 through bar'512rand,

consequently, a similar accelerated movement of the'fleXed channel-bar 81, the travel of which 'causes a correspondingly uneven longitudinal ymovement of the glass-tube. During the rollingfoif roller 506 between the two elements 500 and512, the travel of the carriage 74 becomes greater and greater for each uniforminovement of the screw-shaft, and, accordingly, the'y spaces between the graduations on the tapered part of the tube Y increase, as they should, to correspond toautomatically control` said' scribjer' means to niarkthe lines on said body normally part` way .around ythe same but 'with'bertai `of such 4lines extending entirely around' thel body, substantiallyfas describ'ed-f, s 'i Y 2. In graduatingappliance of'thew'character described, Vthe combination of'means to support the body tobe graduated, scriber Y means for marking graduation lines on said body, means 'for moving said body and scriber meansV relatively to one another to l volve said bodyv and scriber relativelytoonev another, means to move 'said body and scriber v relatively to one another along Vthe axis of such'revolution to` provide the spaces be# tween the graduation'lines,' and lmeans controlling-the periods "o'fmarking activities of the' scriber during thefrelative 4rotation of the 'body and scribe'r, substantially as de"-A scribed. 7

4. Inf ay graduating-appliance, of' the 'charact-er described, the combination of 'means to support the body to' be graduated,y a y scriber fermarking the graduation linesf on said bodyj'mounted to revolve around thel body, ymeans to effectv such revolution,meansY to movejsaidv body and scriber relatively to one another tofprovide the spaces be'tweenf the lines, and 'means controllingfithfe*periods `of marking activities of the yscriberV during its revolutions around the body," substan-V tially as described. .Y j 5. In a graduating-applianceof the char-l acter described, Vthe combination of v:means to supportA the body to'be graduated,- a

` scriberfor marking the graduation lines on 'said body, means to-'revol'vesaid body and scriber relatively to 'oneanothenmeans to movesaid bodyA and scribe'r relatively vto one another'to provide spaces between the graduation lines, and means controlling the periods 'of marking Vactivities of the scriber during the relative" revolutions ofsaid scriber and body Vand causing the scribe'r "at predetermined points to'Y mark graduation lines entirely aroundthe body, substantially as ldescribed. l l j Y. y 6. 'Inaj'graduating-applianceof the character described, the combination of means-'to support thebodyto 'be graduated, a scriber.

gradua-tiny lines on said for marking the o revolve around the body,

body mounted toy means to1 lrevolve said scriber around Ysuch j body, means to move said body and scriber relatively to one another to provide spaces between the lines, andV cam means controlling the Contact of the scriber with the body, substantially as described.

. 7, In a graduating appliance of the character described, the combination of means to support the body to be graduated, a scriber for marking the graduation lines on said body mounted to revolve around the body, means to revolve said scriber around s aid body, means to move said body and scriber relatively to one another to provide spaces between the graduation lines, cam means controlling the contactof the scriber with the body, and meang to shift said cam means to render different surfaces thereof active on the scriber, substantially as described.

8. In a graduating appliance of the character described, the combinationof means to support a hollow body to be graduated, a scriber to mark voluminal graduation lines on said body, means to move the body and scriber relatively to one another to effect the marking operation, manually operable means adjustable to conform substantially to the irregularities of the internal caliber of the body, and mea-ns under the control of said manually adjustable means to move said body and scriber relatively to one another automatically to provide spaces between the graduationlines in agreement with such caliber irregularities. I

9. In a graduating-appliance of the character described, the combination of means tosupport the-hollow body to be graduated, means vto mark graduation lines on said body, and means to move said body and marker relatively to one another to produce the spaces between the lines includingk an element capable of adjustable flexing to produce variations in the spacings of the markings conforming to the irregularities of the internal caliber of the body, substantially as described. Y

10. ln a graduating-appliance of the character described, the combination of means to support the hollow body to be graduated, means to mark graduation lines on said body,

and means to move said body and marker relatively to one another to produce the spaces between the lines including a screwactuated carriage, a flexible element mounted on said carriage, and means to adjustably flex said element, substantially as described.

11. In a graduating-appliance of the character described, the combination'of a slidable support for the hollow body to be graduated, means to slide said support including a carriage slidable at an angle to the direction of travel of said support, a flexible bar on said carriage causing the sliding travel'of said support, and means to adjustably ieX said bar to modify the travel of said support,

and scriber means to mark the spaced gradudescribed. Y c

12. ln a graduating-appliance of the character described, the combination of a support for the body to be graduated, a scriber to mark the graduation lines on said body, means to actuate said scriber, and means to move said body and scriber relatively to one another to create the spaces between said lines including a sliding carriage, an operating screw-shaft, a nut on said4 carriage coacting with said shaft, means to shift said nut into and out of enga-gement with the thread of said shaft, and means to take up the slack in the operating mechanism, substantially as described.

13. ln a graduating-appliance of the character described, the combination of a support for the body to be graduated,a scriber to mark the graduation' lines on said body, means to actuate said scriber, and means to move said body and scriber relatively to one another to create the spaces between said lines including a sliding carriage, an operating rscrew-shaft, a nut on said carriage coacting with said shaft, means to shift said nut into and out of engagement with the thread of said shaft, and means to take up the slack in the operating mechanism when the nut is thrown into engagement with the screw-shaft, substantially` as described.

11i. 'ln a graduating-appliance of the character described, the combination of a support for the -body to be graduated, a scriber to mark the graduation lines on said body, means to actuate said scriber, and means to move said body and scriber relatively to one another to create the spaces between said lines including a sliding carriage, an operating screw-shaft, a nut on said carriage coacting with said Shaft, means `to shift said nut into and out of engagement with the thread of said shaft, the threads of said shaft and nut having beveled co-acting surfaces, and means to take up the slack in the operating mechanism when the nut is thrown into co-operative relation with the shaft, substantially as described.

15. ln a graduatingfappliance of the character described, the combinationof a support for the body to be graduated, a scriber to mark the graduation lines on said body, means to actuate said scriber, and means to move said body and scriber relatively to one another to create the spaces'between said lines including a sliding carriage, an operating screw-shaft, and a nut adapted to co-act with said screw-shaft to feed the carriage along and having a remote pivotal connection with the carriage, whereby wabbling of the shaft will have substantially no detrimental efliects on the travel of the carriage, substantially ag described. l

16. In a graduating-appliance of the char- 

